2 SCHOOL ENTOMOLOGY 



animals and includes Entomology) as a class. The mem- 

 bers of any class that are alike in their general form and 

 structure are placed together in the first sub-division of 

 any class and constitute what we call an order. Those 

 forms in any order that show close resemblance group to- 

 gether and form a family and the members of a family 

 that are even more similar form a genus (plural genera) . 

 The last division in animal, or plant, classification is the 

 species. Members of any genus which are exactly alike 

 or as nearly alike as the offspring from a single parent 

 form, constitute a species. An additional character of a 

 species which is, by the way, difficult to define exactly, is 

 that members of the same species will interbreed and pro- 

 duce young like unto themselves which will, in turn, breed 

 and produce fertile young. Some species will show varia- 

 tion on account of climate, of their food, or from some 

 other external cause, but still retain their power to inter- 

 breed and produce like young. Such differences are rec- 

 ognized under the name of varieties. In Zoological class- 

 ification we have, first, the 

 Animal Kingdom, divided into 

 Branches, composed of 



Classes, each embracing one to several 

 Orders, in which are varying numbers of 

 Families, which contain 

 Genera, and finally the 



Species. 



4. Names. The classification of any animal shows 

 all the above divisions. The scientific name, which is 

 always Latin in form for the sake of uniformity, is com- 

 posed of the name of the genus, capitalized, followed by 

 the name of the species, not capitalized, and then the 

 name of the man who first described and named the ani- 



